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Finding the Fourth Proportional to 5,787.11, 8,682.03 and 1,891.50

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Solution

The fourth proportional to 5,787.11, 8,682.03 and 1,891.50 is: 2,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.11 : 8,682.03 = 1,891.50 : x
  2. Step 2: Convert to fraction form
    5,787.11/8,682.03 = 1,891.50/x
  3. Step 3: Cross multiply
    5,787.11x = 8,682.03 × 1,891.50
  4. Step 4: Simplify right side
    5,787.11x = 16,422,059.75
  5. Step 5: Solve for x
    x = 16,422,059.75/5,787.11
  6. Step 6: Final answer
    x = 2,837.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.